Bonjours svp je ne compend pas et c'est pour demain merci d avance Calcule et donne le resultat sous la forme d une fraction la plus simple possible​

Bonjour

A = 5 x 2/3 - 1/3

A = 10/3 - 1/3

A = 9/3

A = (3 x 3) / (3 x 1)

A = 3

B = 7/4 - 3/4 x 3/2

B = 7/4 - 9/8

B = (7 x 2) / (4 x 2) - 9/8

B = 14/8 - 9/8

B = 5/8

C = (5/6 + 7/12) x 3/5

C = [(5 x 2) / (6 x 2) + 7/12] x 3/5

C = (10/12 + 7/12) x 3/5

C = 17/12 x 3/5

C = 51/60

C = (3 x 17) / (3 x 20)

C = 17/20

D = 3/4 x 2/9 + 28/15

D = 6/36 + 28/15

D = (6 x 1) / (6 x 6) + 28/15

D = 1/6 + 28/15

D = (1 x 5) / (6 x 5) + (28 x 2) / (15 x 2)

D = 5/30 + 56/30

D = 61/30

E = (1/3 x 6/5 - 3/10)

E = (6/15 - 3/10)

E = (6 x 2) / (15 x 2) - (3 x 3) / (10 x 3)

E = 12/30 - 9/30

E = 3/30

E = (3 x 1) / (3 x 10)

E = 1/10

F = [(8 + 2) / (7 + 2)] x [(3 x 6) / (5 x 3)]

F = (10/14) x (18/15

F = 180/210

F = (30 x 6) / (30 x 7)

F = 6/7.